Dump-wagon.



PATENTED JULY 5, 1904. H, C. TRIPP.

DUMP WAGON.

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PATENTED JULY 5, 194.

H. O. TRIPP.

DUMP WAGON.

APPLICATION FILED PEB. 17. 1904.

N0 MODEL.

UNITED STATES Patented July 5, 1904.

PATENT EEICE.

DUMP-WAGON..

SPECIFICATION forming part of Letters Patent `No. 764,319, dated July 5, 1904.

.Application filed February 17, 1984. Serial No. 194,033. (No model.)

To aZ/ 'Lul/tom, it may concern.-

Be it known that I, H ENRY (l. Tarrr, of Auburn, in the county of Cayuga, in the State of New York, have invented new and useful Im provements in Dump-Wagons, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in dump-wagons, and refers more particularly to the dump-box having laterally-swinging bottom doors and to the means for controlling the operation of the doors.

The primary object is to mount a winding shaft or drum upon one of the doors and to connect it by suitable chains or cables to the other door and to provide means under the contro-l of the operator, whereby the shaft or drum may be rotated, held, and released, as desired, to close or permit the opening of the doors. Other objects and uses will appear in the following description.

1n the drawings, Figures 1 and 2 are respectively a side elevation and an inverted plan of a dumpwagon, showing the various features of the invention. Fig. is a sectional view taken on line 3 3, Fig. 1, showing the front end of the box and the means for controlling the operation of the doors in its closed position. Fig. 4 is a detail View of a portion of the operating mechanism seen in Fig. 3, showing the ratchet and pawls in the position assumed for releasing the doors. Fig. 5 is an enlarged sectional View taken on line 5 5, Fig. 1. Figs. 6 and 7 are end elevations similar to Fig. 3, showing modilied means of controlling the operation of the doors. Figs. 8 and 9 are sectional views taken on lines 8 8, Fig. 6, and 9 9, Fig. 7. Fig. 1() is a detail view of the winding mechanism seen in Fig. 7, showingl the pawls as tripped.

The dump-box preferably consists of opposite parallel sides 1 1, front and rear ends 2 and 3, and swinging bottom doors 1 and 5. r1`he sides and ends are rigidly secured together in any desired manner to form a durable substantially rectangular' box -frarne having its sides 1 extended beyond the front and rear ends 2 and 3 and provided with front and rear platforms 6 and 7, which in turn are mounted upon suitable front and rear axles 8 and 9. The bottom doors 4 and 5 are hinged to the lower edges of the sides 1 by suitable hingerods 10, which in this instance are.

the doors are thus closed they also incline downwardly aud inwardly from their swinging axes and meet in a plane substantially midway between the sides. t

The meeting edges of the doors are reinforced by lengthwise truss-rods 12 and 13, both of which are mounted on the lower faces of their respective doors parallel with their meeting edges, the rod 12 being in this instance tubular and is rigidly secured tothe door 4 for forniing an anchorage for suitable winding-cables 14, presently described. The other rod, 13, is rotatably mounted on the door 5 and constitutes a winding drum or shaft upon which the chains or cables are wound and un wound in closing and opening the doors. These rods 12 and 13 extend beyond the front and rear ends 2 3, and the chains or cables 11 are anchored at one end to the ends of the rod 12 and also attached at their opposite ends to the ends of the rotary rod or shaft 13. lt is now apparent that the chains are located at the ends of the dump-box out of the path of the discharging'load to afl'ord a free and uninterrupted action and that by rotating the shaft 13 the chains are wound upon its opposite ends and operate to close both doors simultaneously. This gives a close and short connection between the meeting edges of the doors, and therefore brings the power close to the work to be performed and always in the direction of movement of the doors, so that as they approach each other the length of theV chains between the points of operative connection is gradually reduced, and the loss of labor and power d ue to the stretching of the chains is thereby reduced to a minimum. i

A ratchet 15 and sprocket 1G are rotatingly m unted on the front end of the hinge-rods 10, preferably the right-hand rod, which supports the door 5, and their axes are therefore coincident witheach other and with the swinging axis of the door; but instead of relying' upon this hinge-rod to support the strain I provide suitable open-sided bearings 17, which receive hubs on the opposite ends of the ratchet and sprocket wheels, so that when the rod 1() is withdrawn to remove the doors the ratchet and sprocket wheels may also be removed.

The sprocket-wheel 16 .is .connected by a chain 18 to a similar sprocket-wheel 19 on the front end of the rotary shaft 13 to transmit rotary motion to the latter, and loosely mounted on the hubs of and between the ratchet and sprocket wheels 15 and 16 is a lever 20, carrying a pawl 21, which engages and rotates the ratchet as the lever is rocked in the direction indicated by arrow X. and therefore rotates the sprockets 16 and 1,9 and shaft 13 to wind the chains 14 and close the doors 4 and 5.

A detent 22 engages the ratchet 15 and holds it and the sprocket 16, as well as the shaft 13, from rotation for the purpose of holding' the doors 4 and 5 in their closed position.

The lever 2O is provided with an extension 24, which engages a pin 25 on the detent when the lever is rocked toits eXtreme up position, as seen in Fig. 4, for tripping the detent and releasing' the winding mechanism and doors to dump the load.

The pawl 21 is provided with an arm 26, which engages the adjacent side 1 of the boX at the same time that the extension 24 engages the pin 25, so that as the lever is moved, as above stated, this pawl is also tripped, so that in dumping the load both the pawl and detent are tripped by a single movement of the lever 2O in a direction opposite to that required for closing the doors.

The tripping position of the lever 20 is practically the starting' position in its operation for closing the doors, and as soon as it begins to move forward in the act of closing the doors the pawl 21 and detent 22 drop by gravity into operative engagement with the ratchet-wheel 15, and when it is desired to dump the load it is simply necessary to throw the lever outwardly against the inside of the adjacent side of the box. In this position the free end of the pawl 21 rides under and against the detent 22 and also operates to trip the latter, and therefore the extension 24 may be dispensed with, if desired. It is now seen that the rods 12 and 13 are mounted upon and swing with their respective doors and not only serve to reinforce the meeting` edges of the doors, where the strain is greatest, to prevent their sagging or warping, but the rod 13 is utilized as the direct means for winding and unwinding lthe chains to control the opening and closing of the doors and may be rotated by any suitable means other than that shown and described.

In Figs. 7 and 9 is shown a dump-box of substantially the same construction as that seen in Fig. 3, and the bottom doors are provided with rods 12 and 13, similar to those previously described; but the means for rotating the shaft or rod 13 is somewhat different. In this case a hanger 3() is journaled on the front end of the shaft 13 and is also pivotally connected to the hinge-rod of the door 5, so as to swing with said door. Secured to this shaft are ratchet and sprocket wheels 31 and 32, and upon the upper end of the hanger are revolubly mounted additional ratchet and sprocket wheels 33 and 34, the sprocketwheels 32 and 34 being connected by a beltchain 35, whereby the motion is transmitted from the sprocket 34 to the shaft 13. A lever 36 is mounted on thejournal of the wheels 33 and 34 and is provided with a pawl 37, which engages and rotates the wheel 33 as the lever is rocked in the direction indicated by the arrow y, thereby actuating the sprocket-wheels to rotate the shaft 13 and draw the doors to their closed position. A detent 38 engages the teeth of the ratchet 32, and thereby operates to hold the doors in their closed position. This detent is connected to a second lever 39, and when it is desired to release the doors to dump the load this lever is operated to trip the detent and may be thrown into engagement with the pawl 37, so that when the lever 36 is thrown back the heel of the pawl 37 engages and is tripped by the lever 39, thus releasing the winding-shaft and doors.

The dump-box seen in Fig. 8 is also the same as that shown in Fig. 3, and the bottom doors are equipped with similar rods or shafts 12 and 13 and connecting-chains 14; but in this instance a ratchet-wheel 40 is secured to the front end of the shaft 13 and is engaged by a pawl 41, which is carried on a lever 42. This lever 42 is fulcrumed on the shaft 13, and therefore swings with the door 5, but has an independent rocking movement to actuate the pawl 41 and the ratchet 40 to rotate the shaft 13, and thereby close the doors. A detent 44 is pivoted to an arm 45 on the door and engages the ratchet to hold the doors in their closed position, and in order to release the doors I provide a plunger 46, which is slidably mounted on the lever 42 and is depressible by hand to engage and trip the pawl 41, and when the lever is thrown back the lower end of the plunger is brought into engagement with and trips the detent, thus releasing the winding-shaft 13 and doors 4 and 5, the pawl and detent being returned to their holding positions by suitable springs or by gravity, if desired.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

IOO

IIC)

1. In a dump-wagon, the combination with a dump-box having swinging bottom doors, of a rotary drum on one of the doors oonneoted to the other door whereby the rotation oi the drum opens and closes both doors, and means to rotate the drum.

2. In a dump-wagon, the combination with a dump-box having' swinging bottom doors, a rotary shaft journaled on one of the doors and having its ends Connected to the ends of the other door, whereby both doors are operated by the rotation of the drum, and means for rotating the drum.

3. In a dump-wagon, the Combination with a dump-box having a swinging bottom door, a rotary drum journaled on the door and operatively connected to open and close the door by its rotation, and means to rotate the drum.

4. In a dump-wagon, the combination with a dump-box having swinging bottom doors each having a rod running lengthwise thereof, one of the rods being revoluble, a cable oonnected to the revoluble rod and to the other door, and means to rotate the drum.

5. In a dump-wagon, the combination with a dump-box having swinging bottom doors, a rod secured to and running lengthwise oi' one door, a rotary rod or shaft journaled and running lengthwise of the other door and having its opposite ends connected to the ends of the 4first-named rod, and means for rotating the rotary rod.

6. In a dump-wagon, the combination with a dump-box having' swinging bottom doors, a revoluble drum on one of the doors and oonneoted to the other door, and means at the front end of the box operatively connected to rotate the drum.

7. In a dump-wagon, the combination with a dump-box having swinging bottom doors, eyes on the doors and sides of the box, and hinge-rods inserted through the eyes and revoluble at will to detach the doors from the Sides.

8. In a dump-box, the combination with a dump-box having swinging bottom doors, a rotary shaft on one of the doors and connected by a chain to the other door, a rotary member connected to `transmit rotary motion to said shaft and having its axis coincident with the swinging axis of one of the doors, and means to rotate said member.

In witness whereof I have hereunto set my hand this 13th day of February, 1904.

HENRY C. TRIPP.

Witnesses:

I-I. E. CHASE, M. M. No'r'r. 

